Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7470471 | Resin composition, prepreg and laminate using the composition | Kousuke Hirota, Koutarou Asahina, Hitoshi Sakuraba, Takashi Iiyama | 2008-12-30 |
| 5591870 | Process for producing a vanadium-phosphorus oxide catalyst precursor | Masakatsu Hatano, Masayoshi Murayama, Masumi Ito | 1997-01-07 |
| 5530144 | Process for producing a phosphorus-vanadium oxide catalyst precursor, process for producing a phosphorus-vanadium oxide catalyst, and process for producing maleic anhydride by vapor phase oxidation using the catalyst | Yasushi Tsurita, Masayoshi Murayama, Masumi Ito | 1996-06-25 |
| 5496787 | Process for producing a vanadium-phosphorus oxide catalyst precursor | Masakatsu Hatano, Masayoshi Murayama, Masumi Ito | 1996-03-05 |
| 5128299 | Process for producing crystalline oxide of vanadium-phosphorus system | Masakatsu Hatano, Masayoshi Murayama, Masumi Ito | 1992-07-07 |
| 5021384 | Process for producing crystalline oxide of vanadium-phosphorus system and catalyst containing the crystalline oxide | Masakatsu Hatano, Masayoshi Murayama, Masumi Ito | 1991-06-04 |